/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
1 + 2 + 3
'a' + 'b' + 'c'
10 - 2 + 3 - 5 + 6 + 7
++a + 1 - --b - 6 + ++c + 'a' + 2 - 3
++a +
        1 -
        --b -
        6 +
        ++c +
        'a' +
        2 *
        3 +
        a++ -
        a--

1 * 2 / 3 % 4
1 *
        2 /
        3 %
        4


1 ** 2 ** 3
1 **
        2 **
        3

1 + 2 * 3 - 4 / 5 + 6 % 7 - 8 ** 9



